const validateIdent = {
  aIdentityCode_City: {
    // 城市代码列表
    11: "北京",
    12: "天津",
    13: "河北",
    14: "山西",
    15: "内蒙古",
    21: "辽宁",
    22: "吉林",
    23: "黑龙江 ",
    31: "上海",
    32: "江苏",
    33: "浙江",
    34: "安徽",
    35: "福建",
    36: "江西",
    37: "山东",
    41: "河南",
    42: "湖北 ",
    43: "湖南",
    44: "广东",
    45: "广西",
    46: "海南",
    50: "重庆",
    51: "四川",
    52: "贵州",
    53: "云南",
    54: "西藏 ",
    61: "陕西",
    62: "甘肃",
    63: "青海",
    64: "宁夏",
    65: "新疆",
    71: "台湾",
    81: "香港",
    82: "澳门",
    91: "国外 ",
  },
  IdentityCode_isCardNo(card) {
    //检查号码是否符合规范，包括长度，类型
    var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/; //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X
    if (reg.test(card) === false) {
      return false;
    }
    return true;
  },
  IdentityCode_checkProvince(card) {
    //取身份证前两位，校验省份
    var province = card.substr(0, 2);
    if (validateIdent.aIdentityCode_City[province] == undefined) {
      return false;
    }
    return validateIdent.aIdentityCode_City[province];
  },
  IdentityCode_checkBirthday(card) {
    //检查生日是否正确，15位以'19'年份来进行补齐。
    var len = card.length;
    //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字
    if (len == "15") {
      var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/;
      var arr_data = card.match(re_fifteen); // 正则取号码内所含出年月日数据
      var year = arr_data[2];
      var month = arr_data[3];
      var day = arr_data[4];
      var birthday = new Date("19" + year + "/" + month + "/" + day);
      return validateIdent.IdentityCode_verifyBirthday(
        "19" + year,
        month,
        day,
        birthday
      );
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if (len == "18") {
      var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
      var arr_data = card.match(re_eighteen); // 正则取号码内所含出年月日数据
      var year = arr_data[2];
      var month = arr_data[3];
      var day = arr_data[4];
      var birthday = new Date(year + "/" + month + "/" + day);
      return validateIdent.IdentityCode_verifyBirthday(
        year,
        month,
        day,
        birthday
      );
    }
    return false;
  },
  IdentityCode_verifyBirthday(year, month, day, birthday) {
    //校验日期 ，15位以'19'年份来进行补齐。
    var now = new Date();
    var now_year = now.getFullYear();
    //年月日是否合理
    if (
      birthday.getFullYear() == year &&
      birthday.getMonth() + 1 == month &&
      birthday.getDate() == day
    ) {
      //判断年份的范围（3岁到150岁之间)
      var time = now_year - year;
      if (time >= 3 && time <= 150) {
        return year + "-" + month + "-" + day;
      }
      return false;
    }
    return false;
  },
  IdentityCode_checkParity(card) {
    //校验位的检测
    card = validateIdent.IdentityCode_changeFivteenToEighteen(card); // 15位转18位
    var len = card.length;
    if (len == "18") {
      var arrInt = new Array(
        7,
        9,
        10,
        5,
        8,
        4,
        2,
        1,
        6,
        3,
        7,
        9,
        10,
        5,
        8,
        4,
        2
      );
      var arrCh = new Array(
        "1",
        "0",
        "X",
        "9",
        "8",
        "7",
        "6",
        "5",
        "4",
        "3",
        "2"
      );
      var cardTemp = 0,
        i,
        valnum;
      for (i = 0; i < 17; i++) {
        cardTemp += card.substr(i, 1) * arrInt[i];
      }
      valnum = arrCh[cardTemp % 11];
      if (valnum == card.substr(17, 1)) {
        return true;
      }
      return false;
    }
    return false;
  },
  IdentityCode_changeFivteenToEighteen(card) {
    //15位转18位身份证号
    if (card.length == "15") {
      var arrInt = new Array(
        7,
        9,
        10,
        5,
        8,
        4,
        2,
        1,
        6,
        3,
        7,
        9,
        10,
        5,
        8,
        4,
        2
      );
      var arrCh = new Array(
        "1",
        "0",
        "X",
        "9",
        "8",
        "7",
        "6",
        "5",
        "4",
        "3",
        "2"
      );
      var cardTemp = 0,
        i;
      card = card.substr(0, 6) + "19" + card.substr(6, card.length - 6);
      for (i = 0; i < 17; i++) {
        cardTemp += card.substr(i, 1) * arrInt[i];
      }
      card += arrCh[cardTemp % 11];
      return card;
    }
    return card;
  },
  IdentityCodeValid(card) {
    //   身份证号码检验主入口
    let pass = true;
    let sex = "";
    //是否为空
    if (pass && card === "") pass = false;
    //校验长度，类型
    if (pass && validateIdent.IdentityCode_isCardNo(card) === false)
      pass = false;
    //检查省份
    if (pass && validateIdent.IdentityCode_checkProvince(card) === false)
      pass = false;
    //校验生日
    if (pass && validateIdent.IdentityCode_checkBirthday(card) === false)
      pass = false;
    //检验位的检测
    if (pass && validateIdent.IdentityCode_checkParity(card) === false)
      pass = false;
    if (pass) {
      var iCard = validateIdent.IdentityCode_changeFivteenToEighteen(card);
      if (parseInt(iCard.charAt(16)) % 2 == 0) {
        sex = "女"; // 女生
      } else {
        sex = "男"; // 男生
      }
      return {
        sex: sex, //性别
        birthday: validateIdent.IdentityCode_checkBirthday(iCard), //生日
        address: validateIdent.IdentityCode_checkProvince(iCard), //省份
      };
    } else {
      return false;
    }
  },
};

class IdCardvalidator {
  constructor() {}
  static IdentityCodeValid(id) {
    return validateIdent.IdentityCodeValid(id);
  }
}
module.exports = {
  IdCardvalidator,
};
